Hand cultivator



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Aug. 21, 1923 1,465,656

J. B. SWAN HAND CULTIVATOR Filed April 25 1921 Patented ug, 21 1923.

vUNITED STATES 1,465,656 PATENT lCE.

JOHN B. SWAN,'OF DENVERLCOLORADO, ASSIGNOR OF ONE-HALF TO LOUIS CSEMICZKY,

' OF DENVER, COLORADO.

HAND CULTIVA'IOR.

Application med April 25, 1921. serial No. 464,173.

To aZZ whom t may concern:

Be it known thatl I, JOHN B. SWAN, a citizen of the United States, residing at Denver, in the .county of Denver and State 0f Colorado, have invented new and useful Improvements in Hand Cultivators, ofwhich the followingr is a specification.

The present invention relates to improvements injland cultivatorsand more particularly tothat type for cultivating small and delicate plants, whether in pots or rows.

The primary object of the invention is to provide a cultivator of this character so constructed that the teeth thereof may be easily and quickly removed or replaced, whereby teeth of various designs may be readil .interchanged.

A fiiirther object of the invention, is to provide novel means for firmly securing the teeth shanks between the head plates, but at the same 'timev providing means whereby the teeth and Aassociated Shanks may be quickly removed or replaced.

A-still further object of the invention is to provide a simple and novel means for securing the handle in place.

With these and other objects in view, this.

invention resides in the novel features of construction, formation, combination and arrangement of parts to be hereinafter more fully described, claimed-and illustrated in the accompanying drawing, in which .Figure ll'is a perspective View of the device.

Figure 2 is a sectional view on line 2-2 of Fig. 1.

Figure 3 is a fragmentary detail perspective view of the head plates.

Figure 4 is a sectional view on line 4-4 of Fig. 2.

The device comprises a head 1, consisting vof upper and lower plates 2 and 3, respectively, the former having its forward edge -terminating in a vertical flange 4, said flange being formed'with a plurality of downwardly .opening rectangular notches 5, the purpose of which will appear later.

The lower plate 3 has its rear edge ter-- minating in an upwardly extending ange 6, and upon which the rear end of the upper plate 2 rests, as clearly shown in Fig. 2 of the drawing. l

VThe teeth'7 have their associated Shanks y8,' which are shaped to correspond'to the 'shape of the notches 5, terminating in upturned lugs 9 which areI adapted to detachably engage the perforations 10 formed in the upper plate 2. Since the Shanks 8 are disposed between the plates and engage in the notches 5 it is obvious'that they cannot move laterally, nor can they move endwise, due to the fact thatthe lugs 9 engage the perforat-ions 10.

In order to hold the plates 2 and 3 in clamped engagement with the shanks 8 bolts 11 are passedth'erethrough, and areI equipped withA winged clamping Inuts 12. Thus it will be apparent that the plates may be easily and quickly separated to permit the teeth to be interchanged, when desired. It is some times necessary to change the form of the teeth during diHerent stages of cultivation, and Vthe present construction i designed with this object in view.

It will be noted that the notches 5 are of slightly less depth than the diameter of the Shanks 8, which being the case, the for- Ward end of the plate 3 does not contact with the lower edge of the flange 4, but will, however, contact with the lower surfaces of the Shanks. It will be obvious that when the plate 3 is drawn towards the plate 2 the flange 6 will serve as a fulcrum therefor, and thus cause the forward end of the plate 3 to bear against the shanks 8 and hold the same vsnugly and firmly in the notches 5.

mitting the handle tobe removed, as desired.

' From the foregoing it will be seen that a hand cultivator has been produced constructed in such a/manner that the plates forming the head may be easily and quickly separa-ted. to permit the teeth to be interchanged, as desired.

While I have in this application s ecifically described one embodiment whic my invention may assume in practice, it will be understood that tlns form ofthe same is used for illustrative purposes only and that the invention may be modified in other various forms without departing from the spirit of the invention.

What is claimed is:

l. A, hand eultivator comprising a head, consisting of uppcr and lower plates, teeth having their Shanks arranged between said plates, a flange carried by the rear edge ot the lower plate, the upper plate being fulcrumed on said flange, means t'or drawing the plates towards each other to cause the lower plate to bindingly engage the Shanks, and arms formed integral with the rear edges of the plates and having jaws carried thereby for detachably engaging a handle 2. A cultivator of the class described eom prising a head, consisting of upper and lower plates, flanges carried by the respective witnesses.

Shanks which are engaged between said plates, the flange of the upper plate having notches formed therein, said Shanks being engaged in the notches, said Shanks being greater in diameter than the depth 'of the notches, the upper platebeing ulcrumed on the iange of the lower plate and having its forward end engaged with the Shanks adjacent said notches, and means for holding the plates in operative positions.

In testimony whereof I have hereunto set my hand in presence of two subscribing JOHN B. SWAN.

VVitnesseS:

LEwIs F, BUTTERFiELD, SULLIVAN V. JOHNSON. 

